Mattress depression test apparatus



FIG. 1 is a side elevation view of the invention positioned to measure mattress depression.

FIG. 2 is a top view of the invention in the position of FIG. 1; and,

FIG. 3 is a rear elevation view of the invention.

The second side view has not been shown because it is essentially a mirror image of the first side view.

The front view has not been shown as it would not reveal anything that the existing views have not already shown. 

The ornamental design for a mattress depression test apparatus, as shown and described. 